CN113589185B - Complete machine power test system for new energy automobile - Google Patents
Complete machine power test system for new energy automobile Download PDFInfo
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- CN113589185B CN113589185B CN202111005076.XA CN202111005076A CN113589185B CN 113589185 B CN113589185 B CN 113589185B CN 202111005076 A CN202111005076 A CN 202111005076A CN 113589185 B CN113589185 B CN 113589185B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0095—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring work or mechanical power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/13—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the tractive or propulsive power of vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a complete machine power test system of a new energy automobile, which comprises a workbench, wherein a lifting frame capable of driving the new energy automobile to move along the height is arranged on the workbench, four posture frames capable of moving in the radial direction and/or the axial direction are arranged at positions on the workbench corresponding to four hubs of the new energy automobile, a rotating head capable of adjusting the angle in the pitching direction and fine adjusting in the radial direction is arranged on each posture frame, one end of each rotating head is provided with a connecting end detachably connected with the hub of the lifted new energy automobile, the other end of each rotating head is provided with a transmission shaft connected with a power device in a dynamometer, and the power device can drive the hub of the new energy automobile to rotate through a rotating shaft; the battery simulation system, the lifting control system, the pavement simulation system, the information acquisition system and the dynamometer are respectively and electrically connected with the control main system, and the control main system respectively generates control signals to control; after the battery simulation system is connected, the hub of the new energy automobile is driven to rotate, and the rotating head changes along with the change of the posture of the new energy automobile hub.
Description
Technical Field
The invention relates to the technical field of new energy automobile power testing, in particular to a complete machine power testing system of a new energy automobile.
Background
The new energy automobile adopts a single storage battery as an energy storage power source, and the storage battery is used as the energy storage power source, and the battery provides electric energy for the motor to drive the motor to run, so that the automobile is pushed to run. The new energy automobile adopts electric power as power, and avoids waste gas pollution caused by adopting gasoline as power. The method saves energy, greatly reduces the pollution to the environment, and is an indispensable method for completing DV verification and reliability tests of newly developed electric drive assemblies for new energy automobiles by simulating the whole automobile test on a test bench.
The electric drive assembly counter-dragging test bench is mainly used for completing the relevant DV verification test and delivery test of the electric drive assembly, and further analyzing various performance indexes of the electric drive assembly for testing and detecting. At present, two axial dynamometer machines are generally adopted for dragging test of a universal electric drive power assembly, the tested power assembly is connected through a rigid half shaft, the rack is difficult to debug and center, the installation is troublesome, and the dynamometer machines are expensive and high in cost.
In order to solve the above technical problems, chinese patent document (publication No. CN 206470066U) discloses a test bench for a power assembly of an electric vehicle, comprising: a suspension mounting bracket for fixing the power assembly to be tested; the electric dynamometer is connected with the power assembly to be tested; the motor controller is connected with a driving motor of the power assembly to be tested; the monitoring system is connected with the electric dynamometer and the motor controller; the motor operation parameters when abnormal sound occurs in the running process of the whole vehicle are input into a monitoring system; the monitoring system controls the test bench to restore the running state of the whole vehicle, and positions and identifies the abnormal sound position of the power assembly in the running process of the whole vehicle, so that the interference except the power assembly can be eliminated.
The disadvantages are that: 1. two axial dynamometer pairs are adopted for dragging, the tested power assembly is connected through a rigid half shaft, and the rack is difficult to debug and center and troublesome to install; 2. the new energy automobile is powered by the battery, and if the system test of the new energy automobile cannot be carried out, the new energy automobile may have great danger in use. Problems such as battery burn, and even explosion; 3. the traditional new energy automobile chassis load testing device cannot meet the simulation of complex running conditions and complex road surface conditions.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the complete machine power test system of the new energy automobile, which can reduce the cost of the towing test, can simulate the test of the power output state of the whole electric drive power assembly and improve the authenticity of the bench test data.
In order to solve the technical problems, the invention adopts the following technical scheme:
the complete machine power test system of the new energy automobile comprises a workbench, wherein a lifting frame capable of driving the new energy automobile to move along the height is arranged on the workbench, four posture frames capable of moving in the radial direction and/or the axial direction are arranged on the workbench and correspond to four hubs of the new energy automobile, a rotating head capable of adjusting the angle in the pitching direction and fine adjusting the angle in the axial direction is arranged on each posture frame, one end of each rotating head is provided with a connecting end detachably connected with the hub of the lifted new energy automobile, the other end of each rotating head is provided with a rotating shaft connected with a power device in a dynamometer, and the power device can drive the hub of the new energy automobile to rotate through the rotating shaft;
the system comprises a worktable, a control system, a battery simulation system, a lifting control system, a road surface simulation system and an information acquisition system, wherein the worktable is internally provided with the battery simulation system for supplying power to a new energy automobile, the lifting control system for controlling the lifting of a lifting frame, the road surface simulation system for simulating the road running wind speed and the information acquisition system comprising a plurality of sensors;
after the battery simulation system is connected, the hub of the new energy automobile is driven to rotate, and the rotating head changes along with the change of the posture of the new energy automobile hub.
Before the new energy automobile works, the new energy automobile is placed in the workbench, the information acquisition system in the workbench acquires information that the new energy automobile enters the bottom plate, when the new energy automobile stops at a specified position of the workbench, the information acquisition system sends the information to the control main system, the control main system sends an instruction to the lifting control system, the lifting control system controls the lifting frame to lift, and the new energy automobile is driven to move in the height direction, so that the wheel hub corresponds to the height of the dynamometer on the moving plate;
the distance between the attitude frame and the hub of the new energy automobile is shortened by moving the attitude frame, the attitude frame is connected with the hub of the new energy automobile through the connecting end, and when the attitude frame is connected, if the end face of the connecting end is not aligned with the end face of the hub, the pitching angle of the connecting end can be adjusted through the rotating head or the axial distance of the connecting end can be adjusted through the rotating head, so that the connecting end and the hub can be adjusted and aligned conveniently, and the rotating shaft of the rotating head is connected with a power device in the dynamometer;
after connection is completed, power is supplied to the new energy automobile through the battery simulation system, the hub is tested, in the test process, due to the fact that the posture of the hub swings, the rotating head is adaptive to the posture of the hub, accuracy of data after testing is guaranteed, meanwhile, testing can be conducted through a power device in the dynamometer, an instruction is sent to the road surface simulation system through the control main system, the road surface simulation system simulates the driving windward state of the new energy automobile, load testing is conducted through the dynamometer, and the like, and data tested by the dynamometer are sent to the control main system.
Furthermore, the workbench is internally provided with a movable plate which is positioned at the front end and the rear end of the lifting frame and can move along the axial direction, the movable plate is sequentially provided with an attitude frame and an assembly test frame which slide relative to the movable plate along the radial direction, and the dynamometer is arranged in the assembly test frame.
The design like this, realize through the movable plate that the bracket of gesture frame and assembly test jig and drive both and remove along axial direction, set up on the movable plate and can radial movement through gesture frame and dynamometer again, consequently, can realize simultaneously that the convenient position between them of adjusting is convenient for power test to the radial and axial displacement of gesture frame and dynamometer.
Furthermore, a rotation blocking mechanism for preventing the rotation shaft from rotating is arranged on a transmission shaft of the dynamometer, and one side, far away from the dynamometer, of the rotation blocking mechanism is connected with the rotation shaft.
The locked rotor mechanism is used for carrying out locked rotor test on the hub, locked rotor current and locked rotor torque value and locked rotor loss PK when rated voltage is obtained through the locked rotor test are used for carrying out analysis on the locked rotor current and the three-phase balance condition according to the above data, and reasonableness and some quality problems of a magnetic circuit formed by a new energy motor stator, a rotor winding, a stator and a rotor can be reflected.
Furthermore, stifled commentaries on classics mechanism is including fixing at the epaxial stifled carousel of transmission, be equipped with the torque sensor who is used for testing the transmission shaft moment of torsion on the stifled carousel, stifled carousel both sides are provided with the braking strip that is used for the stifled carousel both sides of chucking respectively.
Before the locked-rotor test is started, the brake strip is inserted into the locked-rotor disc, the locked-rotor disc is locked through the brake strip, the locked-rotor test is started, and the torque value of the transmission shaft is tested through the torque sensor. After the test is finished, the brake strip is loosened, the blocking turntable is manually rotated to the next angle, and the actions are repeated until the blocking test of all angles is finished.
Further, the assembly test jig comprises a slide rail rod fixed on the movable plate, the upper surface of the slide rail rod is provided with a sliding frame in sliding fit with the slide rail rod, the dynamometer is installed on the sliding frame, one end of the slide rail rod is provided with a driving motor, a telescopic rod of the driving motor is connected with the sliding frame, the dynamometer is further provided with a control unit electrically connected with the driving motor, and the control unit is electrically connected with a control main system.
When the scheme is used, the control unit sends an instruction to the control unit through the control main system, the control unit opens and closes the driving motor, the telescopic rod of the driving motor drives the sliding frame to move along the length direction of the sliding rail rod, and the sliding rail rod is fixed on the moving plate sliding groove.
Furthermore, a plurality of clamping blocks are arranged on the side face of the sliding rail rod and are clamped with the side face of the sliding frame. Design like this, carry on spacingly through the fixture block to the carriage position, avoid the carriage when removing, break away from the slide rail pole.
Further, the gesture frame comprises a base capable of moving along the radial direction, a plurality of shock absorbers are arranged at the top of the base, and the shock absorbers are connected with the rotating head through a base plate.
Because the size of the attitude frame is small, the whole attitude frame can move along the radial direction by pushing the base by hand, and the distance between the attitude frame and the hub can be conveniently adjusted; secondly, the vibration during rebound after the rotating head moves axially is restrained through the damper, so that the rotating head is ensured to adapt to the posture of the hub, and the smooth posture is ensured.
Furthermore, the rotating head comprises a sliding disc fixedly connected with the chassis, two sides of the sliding disc are respectively provided with a support lug which is transversely arranged and is of a U-shaped structure, the sliding disc is connected with a connecting platform which is rotatably connected with the pin shaft, two sides of the connecting platform are respectively provided with a sliding block which extends into the support lug, and the sliding block is connected with the support lug through a reset spring.
When the connecting end is connected with the hub, the distance between the connecting end of the rotating head and the hub is finely adjusted by manually moving the position of the connecting platform on the sliding disc, so that the coordinated connection between the connecting end of the rotating head and the hub is ensured; when the hub is subjected to a detection test, the rotating head drives the connecting table to slightly move in the radial direction, and the rotating head can be more adaptive to the posture of the hub by the self-restoring force of the return spring between the lugs and the sliding blocks on the two sides of the connecting table, so that the stability of the hub is ensured; and the connector rotates with the round pin axle to be connected and realizes that whole rotation head can pitch angle regulation's effect, and the slider of joint table both sides inserts in the journal stirrup of sliding disk, consequently, realizes spacing to the joint table through the journal stirrup, avoids the joint table to drop.
Furthermore, the connecting table is connected with the base through an elastic rope. The elastic rope is arranged to ensure the stability of the connecting table.
Further, a support is arranged between the posture frame and the assembly test frame, and a protective cover is arranged at the top of the support. The gesture frame and the dynamometer machine connecting part are protected through the protective cover, and dust is prevented from entering the gesture frame and the dynamometer machine connecting part.
Further, the crane includes two montants of dismantling the connection with the bottom plate that sets up at the workstation, and every montant sliding connection has the forerunner's rack that is used for lifting new energy automobile to and be used for lifting new energy automobile's rear-guard rack.
Design like this, the montant through the elevating platform plays the support to forerunner's rack and rear-guard rack, recycles the montant and forerunner's rack and the rear-guard between sliding connection, and the drive forerunner's rack moves along the montant direction of height with the rear-guard rack to in the forerunner's rack lifts new energy automobile in coordination with the rear-guard rack, makes new energy automobile go up and down along the direction of height.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is more intelligent, the automatic test of the device is realized by a battery simulation system for supplying power to the new energy automobile, a lifting control system for controlling the lifting of the lifting frame, a pavement simulation system for simulating the road state and information acquisition systems positioned at two sides of a bottom plate, the information of the new energy automobile entering the field is collected by the information acquisition systems and is transmitted to a control main system, and the new energy automobile is supplied with power by the battery simulation system, so that the systematic test of the new energy automobile can be avoided, great danger such as battery burning and even explosion can be caused when the device is used, an instruction is sent to the lifting control system by the control main system, the lifting frame is started by the lifting control system, the lifting frame of the new energy automobile is lifted to correspond to the height of the dynamometer, and in the test process, in order to acquire various detection data of the new energy automobile, a road surface simulation system is used for simulating the new energy road surface condition, obtaining data such as new energy load, locked rotor, calibration and the like, transmitting the data to a control main system for analysis, and being capable of analyzing the simulation of complex operation conditions and complex road surface conditions.
2. The hub and the dynamometer are simple in alignment in test, the new energy automobile is integrally lifted through the lifting frame, the hub is enabled to correspond to the dynamometer in height, the dynamometer on the moving plate is moved along the width direction of the bottom table through radial movement, the end face of the dynamometer is guaranteed to be aligned with the end face of the hub, the dynamometer is moved along the axial direction of the moving plate, the dynamometer is relatively moved along the length direction of the bottom table, the end face of the dynamometer is guaranteed to be connected with the end face of the hub, the whole test frame is simple in structure and convenient to install
3. The invention realizes that the attitude frame and the assembly test frame axially move through the movable plate to adjust the distance between the dynamometer and the hub on the assembly test frame, drives the sliding frame on the assembly test frame to move along the length direction of the sliding rail rod through the telescopic rod of the driving motor, adjusts the position of the dynamometer, then pushes the base on the attitude frame to enable the attitude frame to be located at a proper position, realizes that the connecting end is adjusted to tilt up and down for a certain angle by utilizing the rotating head on the attitude frame, and then realizes that the axial position of the connecting end is finely adjusted by axially moving the connecting table rotationally connected with the pin shaft on the sliding disc to ensure that the end surface of the connecting end is opposite to the end surface of the hub, thereby being convenient for installation, and simultaneously, realizing that the connecting end is adaptive to the attitude change of the hub by utilizing the self-restoring force of the reset spring between the support lug of the sliding disc and the sliding block.
3. The locked rotor mechanism realizes a locked rotor test at multiple angles; the locked-rotor mechanism adopts the matching between the locked-rotor disc and the braking strips, a plurality of points on the circumference of the locked-rotor disc can be tested, when the braking strips lock the locked-rotor disc, the locked-rotor disc is subjected to locked-rotor tests on two sides, after the locked-rotor tests are finished, the locked-rotor disc is manually rotated to the next angle, the locked-rotor tests are carried out at multiple angles, the obtained test parameters of the transmission shaft are complete, meanwhile, the load detection can be realized through the locked-rotor mechanism, the torque value output by the hub is detected by using the torque sensor, and the operation is simple and convenient.
Drawings
FIG. 1 is a top view of the complete power test system of the new energy automobile.
Fig. 2 is a schematic structural diagram of a test moving plate in the complete power test system of the new energy automobile.
FIG. 3 is a schematic structural diagram of a testing device in the complete machine power testing system of the new energy automobile.
FIG. 4 is a schematic structural diagram of an attitude frame in the complete power test system of the new energy automobile.
Fig. 5 is a schematic structural diagram of a locked rotor mechanism in the complete power test system of the new energy automobile.
In the figure: the device comprises a workbench 1, a bottom plate 2, a moving plate 3, a vertical rod 4, a new energy automobile 5, a dynamometer 6, an attitude frame 7, a control main system 8, a road surface simulation system 9, a battery simulation system 10, a lifting control system 11, an information acquisition system 12, a control unit 13, a hub 14, a front drive rack 15, a rear drive rack 16, a base 17, a shock absorber 18, a connecting end 19, a protective cover 20, a rotation blocking mechanism 21, a slide rail rod 22, a clamping block 23, an expansion rod 24, a sliding frame 25, a driving motor 26, a pin shaft 27, a connecting table 28, a reset spring 29, a sliding disc 30, an elastic rope 31, a chassis 32, a sliding block 33, a transmission shaft 34, a rotation blocking disc 35 and a brake strip 36.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
In this embodiment: referring to fig. 1 to 5, the complete power test system of the new energy automobile comprises a workbench 1, wherein a lifting frame capable of driving the new energy automobile 5 to move along the height is arranged on the workbench 1, four attitude frames 7 capable of moving radially and/or axially are arranged on the workbench 1 at positions corresponding to four hubs 14 of the new energy automobile 5, a rotating head capable of adjusting the angle and fine adjusting the axial direction is arranged on the attitude frame 7, one end of the rotating head is provided with a connecting end 19 detachably connected with the hubs 14 of the lifted new energy automobile 5, the other end of the rotating head is provided with a rotating shaft connected with a power device in a dynamometer 6, and the power device can drive the hubs 14 of the new energy automobile 5 to rotate through the rotating shaft;
a battery simulation system 10 for supplying power to a new energy automobile 5, a lifting control system 11 for controlling lifting of the lifting frame, a road surface simulation system 9 for simulating road running wind speed and an information acquisition system 12 comprising a plurality of sensors are arranged in the workbench 1, the battery simulation system 10, the lifting control system 11, the road surface simulation system 9, the information acquisition system 12 and the dynamometer 6 are respectively and electrically connected with a control main system 8, and the control main system 8 respectively generates control signals for control;
after the battery simulation system 10 is switched on, the hub 14 of the new energy automobile 5 is driven to rotate, and the rotating head changes along with the change of the posture of the hub 14 of the new energy automobile 5.
Description of the drawings: the sensors of the information acquisition system comprise an infrared sensor, a distance sensor, a rotating speed sensor and the like.
Before the work of the scheme, a new energy automobile 5 is placed in a workbench 1, an information acquisition system 12 in the workbench 1 acquires information that the new energy automobile 5 enters a bottom plate 2, when the new energy automobile 5 stops at a specified position of the workbench 1, the information acquisition system 12 sends the information to a control main system 8, the control main system 8 sends an instruction to a lifting control system 11, the lifting control system 11 controls lifting of a lifting frame and drives the new energy automobile 5 to move in the height direction, and therefore a hub 14 corresponds to the height of a dynamometer 6 on a movable plate 3;
then, the distance between the attitude frame 7 and the hub 14 of the new energy automobile 5 is shortened by moving the attitude frame 7, and the attitude frame is connected with the hub 14 of the new energy automobile 5 through the connecting end 19, and when the connection is performed, if the end surface of the connecting end 19 is not aligned with the end surface of the hub 14, the pitching angle of the connecting end 19 can be adjusted through the rotating head or the axial distance of the connecting end 19 can be adjusted through the rotating head, so that the connecting end 19 and the hub 14 can be adjusted and centered conveniently, and the rotating shaft of the rotating head is connected with a power device in the dynamometer 6;
after connection is completed, power is supplied to the new energy automobile 5 through the battery simulation system 10, the hub 14 is tested, in the test process, due to the fact that the posture of the hub 14 swings, the rotating head is adaptive to the posture of the hub 14, accuracy of data after testing is guaranteed, meanwhile, testing can be conducted through a power device in the dynamometer 6, an instruction is sent to the road surface simulation system 9 through the control main system 8, the road surface simulation system 9 simulates the driving windward state of the new energy automobile 5, load testing is conducted through the dynamometer 6, and the data tested by the dynamometer 6 are sent to the control main system 8.
Preferably, a moving plate 3 which is located at the front end and the rear end of the lifting frame and can move along the axial direction is arranged in the workbench 1, an attitude frame 7 and an assembly test frame which slide relative to the moving plate 3 are sequentially arranged on the moving plate 3 along the radial direction, and a dynamometer 6 is arranged in the assembly test frame.
The design like this, realize through the movable plate 3 that the bracket of gesture frame 7 and assembly test jig and drive both and remove along axial direction, set up on movable plate 3 and can radial movement through gesture frame 7 and dynamometer machine 6 again, consequently, can realize simultaneously that the convenient power test of adjusting position between them is convenient to gesture frame 7 and dynamometer machine 6's radial and axial displacement.
Preferably, the transmission shaft 34 of the dynamometer 6 is provided with a rotation blocking mechanism 21 for preventing the rotation of the rotation shaft, and the side of the rotation blocking mechanism 21 away from the dynamometer 6 is connected with the rotation shaft.
The locked rotor mechanism 21 is used for carrying out locked rotor test on the hub 14, locked rotor current, locked rotor torque value and locked rotor loss PK when rated voltage is obtained through the locked rotor test, the locked rotor current and three-phase balance condition are analyzed according to the above data, and reasonableness and certain quality problems of a magnetic circuit formed by a new energy motor stator, a rotor winding, a stator and a rotor can be reflected.
Preferably, the locked rotor mechanism 21 includes a locked rotor disc 35 fixed on the transmission shaft 34, a torque sensor for measuring the torque of the transmission shaft 34 is disposed on the locked rotor disc 35, and braking strips 36 for clamping two sides of the locked rotor disc 35 are disposed on two sides of the locked rotor disc 35 respectively.
Before the locked rotor test is started, the brake strip 36 is inserted into the locked rotor disc 35, the locked rotor disc 35 is locked through the brake strip 36, the locked rotor test is started, and the torque value of the transmission shaft 34 is tested through the torque sensor. After the test is finished, the brake strip 36 is loosened, the blocking turntable 35 is manually rotated to the next angle, and the actions are repeated again until the blocking test of all angles is finished.
Preferably, the assembly test jig comprises a slide rail rod 22 fixed on the moving plate 3, a sliding frame 25 in sliding fit with the slide rail rod 22 is arranged on the upper surface of the slide rail rod 22, the dynamometer 6 is installed on the sliding frame 25, a driving motor 26 is arranged at one end of the slide rail rod 22, a telescopic rod 24 of the driving motor 26 is connected with the sliding frame 25, a control unit 13 electrically connected with the driving motor 26 is further arranged on the dynamometer 6, and the control unit 13 is electrically connected with the control main system 8.
When the scheme is used, the control main system 8 sends an instruction to the control unit 13, the control unit 13 opens and closes the driving motor 26 again, the telescopic rod 24 of the driving motor 26 drives the sliding frame 25 to move along the length direction of the sliding rail rod 22, and the sliding frame 22 is fixed on the sliding groove of the moving plate 3, so that the sliding frame 25 can move along the axis direction of the sliding groove of the moving plate 3, and meanwhile, the dynamometer 6 is installed on the sliding frame 25, so that the dynamometer 6 can move a proper position along the length direction of the sliding rail rod 22, and the operation is simple and convenient.
Preferably, a plurality of blocks 23 are arranged on the side surface of the slide rail rod 22, and the blocks 23 are clamped with the side surface of the slide frame 25. By the design, the sliding frame 25 is limited by the fixture block 23, and the sliding frame 25 is prevented from being separated from the sliding rail rod 22 when moving.
Preferably, the posture frame 7 comprises a base 17 capable of moving in a radial direction, a plurality of dampers 18 are provided on the top of the base 17, and the dampers 18 are connected with the rotating head through a chassis 32.
Because the posture frame 7 is small in size, the whole posture frame 7 can move along the radial direction by pushing the base 17 by hand, and the distance between the posture frame 7 and the hub 14 can be conveniently adjusted; secondly, the vibration absorber 18 is used for inhibiting the vibration of the rotating head when the rotating head rebounds after moving axially, so that the rotating head is ensured to adapt to the posture of the hub 14, and the smooth posture is ensured.
Preferably, the rotating head comprises a sliding disk 30 fixedly connected with a chassis 32, two sides of the sliding disk 30 are respectively provided with a support lug which is transversely arranged and is of a U-shaped structure, the sliding disk 30 is slidably connected with a connecting platform 28 rotatably connected with the pin shaft 27, the top end of the connecting platform 28 is provided with a bearing seat for mounting a rotating shaft, two sides of the connecting platform 28 are respectively provided with a sliding block 33 extending into the support lug, and the sliding block 33 is connected with the support lug through a return spring 29.
When the connecting end 19 is connected with the hub 14, the distance between the connecting end 19 of the rotating head and the hub 14 is finely adjusted by manually moving the position of the connecting table 28 on the sliding disc 30, so that the coordinated connection between the connecting end 19 and the hub 14 is ensured; when the hub 14 performs a detection test, the rotating head drives the connecting table 28 to slightly move in the radial direction, and the rotating head can be more suitable for the posture of the hub 14 by the self-restoring force of the return spring 29 between the lugs at two sides of the connecting table 28 and the sliding block 33, so that the stability of the rotating head is ensured; the connection head is rotatably connected with the pin shaft 27 to realize the effect that the whole rotation head can tilt and tilt to adjust the angle, and the sliding blocks 33 on the two sides of the connecting platform 28 are inserted into the support lugs of the sliding disk 30, so that the connecting platform 28 is limited through the support lugs, and the connecting platform 28 is prevented from falling off.
Preferably, the connection table 28 and the base 17 are connected by an elastic cord 31. The elastic string 31 is provided to ensure stability of the connecting table 28.
Preferably, a bracket is arranged between the posture frame 7 and the assembly test frame, and the top of the bracket is provided with a protective cover 20. The connecting part of the attitude frame 7 and the dynamometer 6 is protected by the protective cover 20, and dust is prevented from entering the connecting part of the attitude frame 7 and the dynamometer 6.
Preferably, the lifting frame comprises two vertical rods 4 detachably connected with a bottom plate 2 arranged on the workbench 1, and each vertical rod 4 is slidably connected with a front driving rack 15 used for lifting the new energy automobile 5 and a rear driving rack 16 used for lifting the new energy automobile 5.
Design like this, the montant 4 through the elevating platform plays the support to forerunner's rack 15 and rear-guard rack 16, recycles the sliding connection between montant 4 and forerunner's rack 15 and the rear-guard rack 16, drives forerunner's rack 15 and rear-guard rack 16 and moves along 4 direction of height of montant to forerunner's rack 15 and rear-guard rack 16 lift up new energy automobile 5 in coordination, make new energy automobile 5 go up and down along the direction of height.
1. The invention is more intelligent, the automatic test of the device is realized by a battery simulation system 10 for supplying power to the new energy automobile 5, a lifting control system 11 for controlling the lifting of the lifting frame, a pavement simulation system 9 for simulating a road state and information acquisition systems 12 positioned at two sides of a bottom plate 2, the information of the new energy automobile 5 entering the field is collected by the information acquisition systems 12, the information is transmitted to a control main system 8, and the power is supplied to the new energy automobile 5 by the battery simulation system 10, so that the system test of the new energy automobile 5 can be avoided, great dangers such as battery burning and even explosion can be caused when the new energy automobile 5 is used, an instruction is sent to the lifting control system 11 by the control main system 8, the lifting control system 11 is utilized to start the lifting frame, and the new energy automobile 5 is lifted to correspond to the height of the dynamometer 6, in the testing process, in order to obtain various detection data of the new energy automobile 5, the road surface simulation system 9 is used for simulating the road surface condition of the new energy, obtaining data such as new energy load, locked rotor, calibration and the like, and then transmitting the data to the control main system 8 for analysis, so that the simulation, namely the analysis, of the complex running condition and the complex road surface condition can be realized.
2. The hub 14 and the dynamometer 6 are simple to debug and align, the new energy automobile 5 is integrally lifted through the lifting frame, the hub 14 is enabled to correspond to the dynamometer 6 in height, the dynamometer 6 on the moving plate 3 is moved along the width direction of the bottom table through radial movement, the end face of the dynamometer 6 is enabled to be aligned with the end face of the hub 14, the dynamometer 6 is enabled to move along the length direction of the bottom table relatively through axial movement of the dynamometer 6 on the moving plate 3, the end face of the dynamometer 6 is enabled to be connected with the end face of the hub 14, the whole test frame is simple in structure, and installation is facilitated
3. The invention realizes the axial movement of the attitude frame 7 and the assembly test frame through the moving plate 3 so as to adjust the distance between the dynamometer 6 on the assembly test frame and the hub 14, the telescopic rod 24 of the driving motor 26 drives the sliding frame 25 on the assembly test frame to move along the length direction of the sliding rail rod 22, the position of the dynamometer 6 is adjusted, the base 17 on the posture frame 7 is pushed, the posture frame 7 is located at a proper position, the connecting end 19 is adjusted to be inclined and inclined for a certain angle by using the rotating head on the posture frame 7, the connecting table 28 rotationally connected with the pin shaft 27 axially moves on the sliding disc 30 to achieve fine adjustment of the axial position of the connecting end 19, the end face of the connecting end 19 is ensured to be right opposite to the end face of the hub 14, and the installation is convenient, meanwhile, the adaptation of the connection end 19 to the posture change of the hub 14 is achieved by the self-restoring force of the return spring 29 between the lug of the sliding disk 30 and the slider 33.
3. The locked rotor mechanism 21 of the invention realizes a locked rotor test at multiple angles; the locked-rotor mechanism 21 of the invention adopts the matching between the locked-rotor disc 35 and the braking strips 36, a plurality of points on the circumference of the locked-rotor disc 35 can be tested, when the braking strips 36 lock the locked-rotor disc 35, the locked-rotor test is carried out on two sides of the locked-rotor disc 35, after the locked-rotor test is finished, the locked-rotor disc 35 is manually rotated to the next angle, the locked-rotor test at multiple angles is realized, the obtained test parameters of the transmission shaft 34 are complete, meanwhile, the load detection can also be realized through the locked-rotor mechanism 21, the torque value output by the hub 14 is detected by using the torque sensor, and the operation is simple and convenient.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (8)
1. The new energy automobile complete machine power testing system comprises a workbench (1) and is characterized in that a lifting frame capable of driving a new energy automobile (5) to move along the height is arranged on the workbench (1), four attitude frames (7) capable of moving radially and axially are arranged on the workbench (1) and correspond to four hubs of the new energy automobile (5), a rotating head capable of adjusting the angle and fine adjusting the axial direction is arranged on each attitude frame (7), one end of each rotating head is provided with a connecting end (19) detachably connected with the hub of the lifted new energy automobile (5), the other end of each rotating head is provided with a rotating shaft connected with a power device in a dynamometer (6), and the power device can drive the hub of the new energy automobile (5) to rotate through the rotating shaft;
the rotating head comprises a sliding disc (30) fixedly connected with a chassis (32), two sides of the sliding disc (30) are respectively provided with a support lug which is transversely arranged and is in a U-shaped structure, the sliding disc (30) is connected with a connecting table (28) rotatably connected with a pin shaft (27) in a sliding manner, two sides of the connecting table (28) are respectively provided with a sliding block (33) extending into the support lug, the sliding block (33) is connected with the support lug through a reset spring (29), and the connecting table (28) axially moves on the sliding disc (30) to realize fine adjustment of the axial position of the connecting end (19);
the worktable (1) is internally provided with a movable plate (3) which is positioned at the front end and the rear end of the lifting frame and can move along the axial direction, the movable plate (3) is sequentially provided with a posture frame (7) and an assembly test frame which slide relative to the movable plate (3) along the radial direction, the posture frame (7) and the assembly test frame can move along the radial direction, and the dynamometer (6) is arranged in the assembly test frame;
a battery simulation system (10) for supplying power to a new energy automobile (5), a lifting control system (11) for controlling lifting of the lifting frame, a road surface simulation system (9) for simulating road running wind speed and an information acquisition system (12) comprising a plurality of sensors are arranged in the workbench (1), the battery simulation system (10), the lifting control system (11), the road surface simulation system (9), the information acquisition system (12) and the dynamometer (6) are respectively and electrically connected with the control main system (8), and the control main system (8) respectively generates control signals for control;
after the battery simulation system (10) is connected, a hub of the new energy automobile (5) is driven to rotate, and the rotating head changes along with the change of the posture of the hub of the new energy automobile (5).
2. The complete machine power test system of the new energy automobile as claimed in claim 1, wherein a rotation blocking mechanism (21) for preventing the rotation of the rotation shaft is arranged on the transmission shaft (34) of the dynamometer (6), and one side of the rotation blocking mechanism (21) far away from the dynamometer (6) is connected with the rotation shaft.
3. The complete machine power test system of the new energy automobile as claimed in claim 2, wherein the rotation blocking mechanism (21) comprises a blocking turntable (35) fixed on the transmission shaft (34), the blocking turntable is provided with a torque sensor for testing the torque of the transmission shaft (34), and two sides of the blocking turntable (35) are respectively provided with a braking strip (36) for clamping two sides of the blocking turntable (35).
4. The complete machine power testing system of the new energy automobile according to claim 1, wherein the assembling test frame comprises a slide rail rod (22) fixed on the moving plate, a sliding frame (25) in sliding fit with the slide rail rod (22) is arranged on the upper surface of the slide rail rod, the dynamometer (6) is installed on the sliding frame (25), a driving motor (26) is arranged at one end of the slide rail rod, a telescopic rod (24) of the driving motor (26) is connected with the sliding frame (25), a control unit (13) electrically connected with the driving motor (26) is further arranged on the dynamometer (6), and the control unit (13) is electrically connected with the control main system (8).
5. The complete machine power test system of the new energy automobile according to claim 1, characterized in that the attitude frame (7) comprises a base (17) capable of moving along a radial direction, a plurality of shock absorbers (18) are arranged on the top of the base (17), and the shock absorbers (18) are connected with the rotating head through a chassis (32).
6. The complete machine power test system of the new energy automobile as claimed in claim 5, wherein the connection table (28) is connected with the base (17) through an elastic rope (31).
7. The complete machine power test system of the new energy automobile as claimed in claim 2, wherein a support is arranged between the attitude frame (7) and the assembly test frame, and a protective cover (20) is arranged on the top of the support.
8. The complete machine power test system of the new energy automobile as claimed in claim 1, wherein the lifting frame comprises two vertical rods (4) detachably connected with a bottom plate (2) arranged on the workbench (1), each vertical rod (4) is slidably connected with a front driving rack (15) used for lifting the new energy automobile (5) and a rear driving rack (16) used for lifting the new energy automobile (5).
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| CN114112263B (en) * | 2021-11-19 | 2023-08-04 | 西安航空学院 | Vibration testing device capable of adjusting automobile posture |
| CN114778128A (en) * | 2022-03-31 | 2022-07-22 | 东风汽车集团股份有限公司 | All-condition dynamic simulation test bed for detecting abnormal sound of whole vehicle and test method thereof |
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